Structure of Matter

What is the basic unit of matter and is the smallest particle of an element?

• Atoms
• Elements
• Compounds
• Molecules

Two or more atoms chemically bonded together are called a

• atom
• element
• molecule
• mixture

How many carbon atoms are there in a methane molecule? 

• 0
• 1
• 4
• 5

How many hydrogen atoms are there in a water molecule? H²0

• 0

• 1

• 2

• 3

Elements are made of 

• many types of atoms 
• the periodic table
• one type of atom 
• molecules 

All matter is made of 

• energy 
• atoms 
• electrons 
• compounds 

What is the correct formula for this molecule?

• NH
• N₃H
• NH₃
• NH₄

Substance made of two or more different elements that chemically combine. 

• Atom
• Element
• Compound
• Proton

How many carbon atoms are there in C₃H₁₂O₅?

• 1

• 3

• 12

• 5

How are elements different from atoms?

• Elements are made out of atoms

• Atoms are made out of elements

• Elements are made out of molecules

• Molecules are made out of atoms.